JPH0515487U - Electronic device cooling device - Google Patents

Abstract

(57) [Summary] [Structure] The radiation fin 3 provided facing the opening of the side wall 11 of the control box 1 for housing the electronic device provided with the heating element 5.
And a partition plate 2 having an inlet 21 at the bottom and an outlet 22 at the top, and an axial flow provided outside the inlet 21 so that cooling air is blown almost perpendicularly to the surface of the radiation fins 3. The cooling fan 7 and the air guide plate 8 for guiding the cooling air along the side wall 11 of the control box 1 are provided outside the exhaust port 22. [Effect] Since the cooling fan is installed in a flat space along the side wall of the control box, the dead space on the back side where the electronic equipment of the control box is installed is reduced, and the cooling air is supplied to the outside of the control box. Since it is passed, the cooling efficiency can be maintained high.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cooling device for an electronic device having a heating element inside the device.

[0002]

[Prior Art]

 BACKGROUND ART Conventionally, there has been disclosed a cooling device including a heat radiation fin that extends in a vertical direction in contact with an electronic device provided with a heating element and a cooling fan that cools the heat radiation fin in a control box. 63-164294). In addition, a ventilation path is provided outside the control box that houses the electronic device equipped with the heating element, and a radiation fin is provided in the ventilation path that is in contact with the back of the electronic device. Japanese Patent Laid-Open No. 63-172197 discloses a fan provided with a cooling fan that blows through the air passage.

[0003]

[Problems to be solved by the device]

 However, in the configuration in which the radiation fins and the cooling fan are provided in the control box, the cooling air having the heat taken from the radiation fins passes through the control box, so that the inside of the control box is not sufficiently cooled. was there. In addition, in the configuration where a ventilation fan is provided outside the control box and a cooling fan that sends cooling air from one side of the radiating fin is installed, the cooling fan has an outer diameter larger than the thickness of the radiating fin, so there is space to install the cooling fan. There are drawbacks that the structure of the control box becomes complicated and the space factor of the cooling device becomes large because it is made to enter the control box or protrude from the control box to the outside. An object of the present invention is to provide a cooling device for electronic equipment having a low cooling efficiency and a small space factor of the cooling device.

[0004]

[Means for Solving the Problems]

 According to the present invention, a ventilation path is provided outside a control box that houses an electronic device having a heating element, a radiating fin having the heating element on the back side, and cooling air is blown to the radiating fin provided in the ventilation path. In a cooling device for an electronic device equipped with a cooling fan to be attached, a partition plate for separating the inside of the control box and the ventilation passage, which has an air inlet at the bottom and an air outlet at the top, and an outside of the air inlet. An axial flow type cooling fan provided so that the cooling air is blown almost perpendicularly to the surface of the radiation fin, and an air guide plate for guiding the cooling air to the exhaust port along the side wall of the control box. It is provided.

[0005]

[Action]

 Since the axial length of the axial flow type cooling fan is shorter than the outer diameter, it can be installed in a flat space along the side wall of the control box, and the shape of the control box can be simplified. The length of the duct that separates the flow of the cooling air from the side wall can be reduced.

[0006]

【Example】

 The present invention will be described with reference to the embodiments shown in the drawings. FIG. 1 is a side sectional view showing an embodiment of the present invention, in which a side wall 11 of a control box 1 is provided with an opening 12 and the opening 12 is closed by a partition plate 2 having an inlet 21 and an exhaust 22. The inside of the control box 1 is separated from the outside. A support portion 4 for supporting the radiation fins 3 is provided inside the partition plate 2 so that the radiation fins 3 can be mounted parallel to the partition plate 2, and the surface of the radiation fins 3 facing the inside of the control box 1 is arranged. Has the heating element 5 fixed. A ventilation path 6 is provided outside the partition plate 2 so as to separate the flow of cooling air from the control box 1. An axial flow type cooling fan 7 is provided outside the air intake port 21 in the ventilation passage 6 so that the cooling air is blown from the air intake port 21 to the lower surface of the radiation fin 3 almost vertically. An air guide plate 8 for guiding cooling air to be discharged along the side wall 11 of the control box 1 is provided outside the exhaust port 22. The cooling air sent from the cooling fan 7 to the inside of the partition plate 2 through the air inlet 21 is directly blown to the lower surface of the radiating fin 3, flows upward while removing the heat of the radiating fin 3, and the air guide plate 8 Is discharged to the outside of the control box 1. Since the axial length of the axial flow type cooling fan 7 is shorter than the outer diameter, it can be mounted in a flat space along the side wall 11 of the control box 1 and the shape of the control box 1 can be simplified. The length of the ventilation passage 6 protruding from the side wall 11 can be reduced.

[0007]

[Effect of the device]

 As described above, according to the present invention, since the cooling fan is installed in the flat space along the side wall of the control box, the dead space on the back side where the electronic equipment of the control box is installed is reduced and The cooling air is passed through the outside of the control box, which has the effect of maintaining a high cooling efficiency.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Control box 11 Side wall 2 Partition plate 21 Air inlet 22 Exhaust port 3 Radiating fin 5 Heating element 6 Ventilation path 7 Cooling fan 8 Air guide plate

Claims (1)

[Scope of utility model registration request] 1. A ventilation path outside a control box for housing an electronic device provided with a heating element, a radiation fin provided with the heating element on a back surface, and cooling air blown to the radiation fin provided in the ventilation path. In a cooling device for electronic equipment provided with a cooling fan, a partition plate for separating the inside of the control box and an air passage provided with an air inlet in the lower part and an exhaust port in the upper part, and cooling outside the air inlet An axial flow type cooling fan provided so that air is blown almost perpendicularly to the surface of the radiating fins,
A cooling device for electronic equipment, wherein an air guide plate for guiding the cooling air along the side wall of the control box is provided at the exhaust port.